| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py |
| ; RUN: opt < %s -instcombine -S | FileCheck %s |
| |
| ; PR49778: this should not be folded to 0. |
| define i32 @src(i1 %x2) { |
| ; CHECK-LABEL: @src( |
| ; CHECK-NEXT: [[X13:%.*]] = zext i1 [[X2:%.*]] to i32 |
| ; CHECK-NEXT: [[_7:%.*]] = shl i32 -1, [[X13]] |
| ; CHECK-NEXT: [[MASK:%.*]] = xor i32 [[_7]], -1 |
| ; CHECK-NEXT: [[_8:%.*]] = and i32 [[MASK]], [[X13]] |
| ; CHECK-NEXT: [[_9:%.*]] = shl i32 [[_8]], [[X13]] |
| ; CHECK-NEXT: ret i32 [[_9]] |
| ; |
| %x13 = zext i1 %x2 to i32 |
| %_7 = shl i32 4294967295, %x13 |
| %mask = xor i32 %_7, 4294967295 |
| %_8 = and i32 %mask, %x13 |
| %_9 = shl i32 %_8, %x13 |
| ret i32 %_9 |
| } |
